indicator renaming

graphics/elements/indicators/RGBLED.lua

@@ -0,0 +1,61 @@
+-- Indicator RGB LED Graphics Element
+
+local element = require("graphics.element")
+
+---@class indicator_led_rgb_args
+---@field label string indicator label
+---@field colors table colors to use
+---@field min_label_width? integer label length if omitted
+---@field parent graphics_element
+---@field id? string element id
+---@field x? integer 1 if omitted
+---@field y? integer auto incremented if omitted
+---@field fg_bg? cpair foreground/background colors
+---@field hidden? boolean true to hide on initial draw
+
+-- new RGB LED indicator light
+---@nodiscard
+---@param args indicator_led_rgb_args
+---@return graphics_element element, element_id id
+local function indicator_led_rgb(args)
+    element.assert(type(args.label) == "string", "label is a required field")
+    element.assert(type(args.colors) == "table", "colors is a required field")
+
+    args.height = 1
+    args.width = math.max(args.min_label_width or 0, string.len(args.label)) + 2
+
+    -- create new graphics element base object
+    local e = element.new(args)
+
+    e.value = 1
+
+    -- on state change
+    ---@param new_state integer indicator state
+    function e.on_update(new_state)
+        e.value = new_state
+        e.w_set_cur(1, 1)
+        if type(args.colors[new_state]) == "number" then
+            e.w_blit("\x8c", colors.toBlit(args.colors[new_state]), e.fg_bg.blit_bkg)
+        end
+    end
+
+    -- set indicator state
+    ---@param val integer indicator state
+    function e.set_value(val) e.on_update(val) end
+
+    -- draw label and indicator light
+    function e.redraw()
+        e.on_update(e.value)
+        if string.len(args.label) > 0 then
+            e.w_set_cur(3, 1)
+            e.w_write(args.label)
+        end
+    end
+
+    -- initial draw
+    e.redraw()
+
+    return e.complete()
+end
+
+return indicator_led_rgb